What is a PD charger?
USB Power Delivery (PD) is a negotiation protocol over USB-C. The charger and the device agree on a voltage and current instead of staying locked at 5 V. That is why the same PD brick can feed a phone at 20–30 W and a notebook at 45–65 W or higher, provided the cable and the device support it.
FUMEI’s published range uses PD on car chargers (20 W / 30 W and multi-port mixes with QC), wall chargers (20 W through 65 W, plus high-watt multi-port GaN), and power adapters through desktop series listed up to 140 W.